Except it is true. He moved out of collaboration and into hiring yes men. Particularly after getting rid of the people that wanted to change the ending of ROTJ to be darker. He didn’t get anyone brave enough to direct himself, and I agree he didn’t want to do it, but his ideas weren’t challenged in the same way. You think Ron Howard wants to be in a position like Richard Marquand but with even less freedom? Just think about the famous ‘I love you’ line and how it was changed on the day by people that put character first. Where were those people on the day they shot the midochlorians line? Gone.
KOTCS was a disaster because Spielberg’s passion was dead at that point and he didn’t challenge any of the bad ideas like the ones that were cut from The Last Crusade. If it was still the '80s they might have even made a plot about aliens work, but artists change. People having high expectations isn’t the problem; it’s the fact that their expectations were dashed in such a massive way that they could never have predicted.